code: def test_uu_imp_clone():
      algo = knn.UserUser(30, feedback="implicit")
      a2 = clone(algo)
  
      assert a2.get_params() == algo.get_params()
      assert a2.__dict__ == algo.__dict__
  
imports: from lenskit.algorithms import Recommender
  import lenskit.algorithms.user_knn
  from lenskit.util import clone
  from pathlib import Path
  import logging
  import pickle
  import pandas
  import numpy
  from scipy.sparse import linalg
  from pytest import approx, mark
  import lenskit.util.test
label_desc: Use image node_id 4 for calling a global function with example usage: test_uu_imp_clone() without return types